Rotor BB1 bottom bracket equipped with ceramic bearings and advanced non-contact labyrinth seals that give buttery-smooth spinning with unparalleled protection against dust, water and mud. New plastic caps offer significantly improved lateral compression and deformation resistance, facilitating crisp shifting. Elegant new cup design guarantees a sleek modern look combining striking angles with smooth curves.
Compatible with all conventional Rotor cranks, Shimano and Shimano compatible cranks with 24mm integrated axle.
Material: bearing cups: 7075 T6 aluminium
bearings: ceramic
Weight supplement: manufacturer information
